stratification

noun

1.
the act or process or arranging persons into classes or social strata
Derived from:
stratify
2.
the condition of being arranged in social strata or classes within a group
social stratification
Derived from:
stratify
3.
forming or depositing in layers
Derived from:
stratify
4.
a layered configuration
5.
the placing of seeds in damp sand or sawdust or peat moss in order to preserve them or promote germination
Derived from:
stratify